61903-2RS1
618 & 619 Series Thin Section Bearings
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Basic Information
Main Dimensions
Performance
Materials
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61903-2RS1 Bearing Product Overview & Core Advantages
The 61903-2RS1 is a single row deep groove ball bearing designed for high-precision applications requiring reliable performance in compact spaces. This sealed bearing excels in handling radial loads and moderate axial loads in both directions. Manufactured to P6 tolerance class, it offers superior dimensional accuracy and running precision. Its compact design (17mm bore, 30mm OD, 7mm width) and pre-lubricated construction make it ideal for applications demanding low maintenance and long service life within a wide operating temperature range of -30°C to 120°C.
61903-2RS1 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 61903 | Basic bearing designation: Single row deep groove ball bearing series 619 with 17mm bore diameter |
| 2RS1 | Sealing: Double rubber contact seals on both sides providing excellent protection against contamination |
61903-2RS1 Bearing Structural Features & Performance Benefits
Optimized Sealing System: The 2RS1 rubber seals effectively prevent the ingress of contaminants while retaining lubricant, significantly extending bearing service life in demanding environments.
Precision Engineering: Manufactured to P6 tolerance class with CN radial internal clearance, this bearing ensures smooth operation, reduced vibration, and enhanced positioning accuracy.
Robust Material Construction: Featuring chrome steel rings and balls with a stainless steel cage, the bearing delivers excellent durability and corrosion resistance.
Pre-lubricated Design: Factory-filled grease provides immediate operation readiness and maintenance-free performance throughout the bearing's service life.
High-Speed Capability: With a limiting speed of 14,000 rpm, the bearing is suitable for high-speed applications requiring reliable performance.
61903-2RS1 Bearing Typical Application Areas
- Small Electric Motors: Ideal for miniature motors, fan motors, and precision motor applications
- Office Automation Equipment: Printers, scanners, copiers, and other precision office machinery
- Medical Devices: Small medical instruments, dental handpieces, and laboratory equipment
- Precision Instruments: Measuring devices, optical equipment, and scientific instruments
- Automotive Components: Small pumps, actuators, and auxiliary drive systems
- Computer Peripherals: Hard disk drives, cooling fans, and precision positioning mechanisms
